Sanger, CA 93790 Frost Dates
Frost dates for Sanger, CA, ZIP 93790
Around 01/14 is the usual last spring frost, about 139 days away. The first fall frost typically arrives around 12/14, about 337 frost-free days later.
Sanger sits in USDA Zone 9b (25 to 30°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
What to do before the first frost
Zone 9b around Sanger has about 15 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
Why 01/14 isn't a guarantee
01/14 is the middle of 30 years of NOAA records, not a promise. Plant by 02/11 and you're betting against frost in roughly 9 years out of 10. 12/22 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Sanger compares
About 337 days separate Sanger's last and first frost, putting it 2,691 of 40,283 ZIP codes nationally. Within CA, it ranks 1,214 of 2,555.
Learn more
the frost range explains how to read the range around Sanger's dates instead of trusting one, and local microclimates explains what one yard in Sanger can differ from the 93790 normal.